JP2003078154A - Clasping structure for solar battery module frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clasping structure for a solar battery module frame which can easily mount a frame material on a solar battery module with a simple structure and an excellent durability. SOLUTION: The frame material 4 has a sandwiching part 42 for sandwiching a rubber filler 3 and a module outer peripheral edge together, and clamping members 40, 44 and 46 clamped at other member. The sandwiching part 42 has a retainer 45 brought into contact with an upper surface of the module outer peripheral edge, a caul stop 49 brought into contact with an outer peripheral surface of the filler, and an oblique guide surface 48 inclined so that an interval to the retainer is wider at an inside than an outside to guide the filler in such a manner that the filler is easily inserted until the outer peripheral surface of the filler is brought into contact with the caul stop. The filler has an upper surface 36 brought into contact with the retainer, an outer peripheral surface 34 brought into contact with the caul stop, a tapered surface 32 brought into contact with the guide surface, and an L-shaped cutout part 39 for bringing the end face of the outer peripheral edge of the module into contact with a lower surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell module frame mounting structure for protecting an outer peripheral edge portion of a solar cell module.

[0002]

2. Description of the Related Art Since a solar cell module has a thin film power generation layer formed on a glass substrate, there is a risk of damage such as cracking or chipping if the solar cell module is directly mounted on a mount or the like. For this reason, when the solar cell module is installed in various buildings and works, the four sides of the solar cell module are surrounded by aluminum frame members. To avoid direct contact between glass and metal in this case,
A flexible filler is inserted between the module and the frame member. There are various shapes and materials for the filler, and various proposals have been made for the mating structure.

In the specification of Japanese Patent Application No. 11-46754, a semi-solid sealing material such as a silicone sealant is filled in a sandwiching portion of a frame material, and a solar cell module is pushed into the nipping portion to form a semi-solid sealing material. A frame mating structure for diffusing and filling between frame materials / modules is described.

[0004]

However, in the conventional frame joint structure, it is necessary to provide a clearance for the sealing material inside the frame, and the shape of the frame is complicated.

Further, in the conventional structure, after the module is pushed into the holding portion of the frame, it is necessary to further remove the excess sealing material protruding to the outside, which is troublesome and the construction cost is high. Increase. Further, in the conventional structure, it takes a considerable time for the sealing material to be completely solidified.

Further, in the conventional structure, especially in the case of a large area module, the deflection and deformation of the module end portion become large, so that the frames are not aligned with respect to the module and it is difficult to align them. In addition, foreign matter such as rainwater and dust is likely to collect in the step formed between the module and the frame.

It is also conceivable to use a packing used for an aluminum sash or the like for mounting the solar cell module frame, but since the aluminum sash packing has a structure exposed on the surface, its durability is insufficient. Is.

The present invention has been made in order to solve the above-mentioned problems, and has a durable structure in which a frame member can be easily attached to a solar cell module with a simple structure and is excellent in durability. The purpose is to provide.

[0009]

A solar cell module frame mounting structure according to the present invention is a solar cell in which a rubber-based filler is inserted between an outer peripheral edge of a solar cell module and a frame member surrounding the solar cell module. In the module frame joint structure, the frame member includes a holding portion that holds the filler and the outer peripheral edge portion of the solar cell module together, and a fastening portion that is fastened to another member. The sandwiching portion includes a pressing member that abuts on an upper surface of an outer peripheral edge portion of the solar cell module, a stopper that abuts an outer peripheral surface of the filling material, and the filling until the outer peripheral surface of the filling material abuts the abutting stopper. In order to guide the filling material so that the material can be easily inserted, an inclined guide surface that is inclined so that a space between the pressing member and the pressing member is wider on the inner side than on the outer side. The filler is in contact with an upper surface that contacts the pressing member, an outer peripheral surface that contacts the contact stopper, a tapered surface that contacts the inclined guide surface, and an end surface and a lower surface of the outer peripheral edge of the solar cell module.
And a character cutout portion.

In this case, the filler preferably has a plurality of protrusions on the tapered surface. Since the plurality of protrusions reduce the mutual contact area of the frame member with the inclined guide surface, the frictional resistance when inserting the filling material into the sandwiching portion of the frame material becomes small, and the filling material is easily pushed into the frame material. Note that the required sealing property is ensured by providing a plurality of protrusions.

Further, it is preferable that the filling material is notched at a portion corresponding to a corner angle where the outer peripheral surface and the upper surface intersect.
This is because when such corner cutouts are provided, it becomes easier to push the filling material to the place where the frame material is abutted. It should be noted that if the portion corresponding to the corner angle where the outer peripheral surface and the tapered surface intersect is also cut out, it becomes easier to push the filling material to the stop and the adhesion between the filling material and the frame material increases.

Further, the inclination angle of the taper surface of the filler is
It is preferably smaller than the inclination angle of the inclined guide surface of the frame member. This is because it becomes easier to push the filling material to the place where the frame material is stopped.

Further, it is preferable that the inner peripheral surface of the filling material is located inward of the inner peripheral surface defining the inclined guide surface of the frame member. This is to prevent a recess that becomes a dead space from being formed between the filling material and the frame material.

The filling material is made of synthetic rubber such as neoprene rubber or butyl rubber, and it is desirable to adjust the hardness to various hardness according to the size of the holding portion of the frame material.
The filling material may be softened when the frontage of the holding portion of the frame material is wide, but when the frontage of the holding portion is narrow, it is necessary to set the hardness to a predetermined level or higher. This is because if the filling material is too soft, it cannot be pushed into the holding portion.

[0015]

Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First, the outline of the solar cell panel will be described. As shown in FIGS. 1 and 2, the solar cell panel 1 is formed by surrounding all four sides of the solar cell module 2 with an aluminum frame member 4 for protection, and a plurality of solar cell modules 1 provided at appropriate positions of the frame member 4 are provided. By inserting the bolt 51 through the bolt hole 47 and tightening the nut 52, the nut 52 is attached to another member, for example, the fixed frame 55 shown in FIG. The size of the solar cell module 2 used in this embodiment is, for example, 1400 mm × 1100 mm.

A rubber liner 3 as a filler is inserted between the solar cell module 2 and the frame member 4 as shown in FIGS. 4 and 5, and the outer peripheral edge of the solar cell module 2 is protected from rainwater infiltration. It is supposed to be protected.

As shown in FIG. 6, the solar cell module 2
The long side rubber member 3a is attached to the long side, and the short side rubber member 3b is attached to the short side. Each rubber member 3a,
3b is adhered to each side of the solar cell module 2 with an adhesive. The ends of the rubber members 3a and 3b are cut and aligned at about 45 ° to form a mating surface 31, and the mating surfaces 31 are also bonded to each other.

As shown in FIG. 7, by attaching the long side frame member 4a and the short side frame member 4b to the solar cell module 2 surrounded by the rubber liner 3 on all four sides, the entire four sides are surrounded. The solar cell panel 1 is surrounded by the frame member 4. Notch parts 41 are formed at both ends of the short side frame member 4b to prevent overlapping with the long side frame member 4a.

As shown in FIG. 3, the ends of the long-side frame member 4a are aligned with the notches 41 of the short-side frame member 4b, and the screw 50 is screwed into the screw hole 44 from the short-side frame member 4b. The short-side frame member 4b is fastened to the long-side frame member 4a by screwing in to form an integral frame member 4.

(First Embodiment) Next, the fitting structure of the first embodiment will be described in detail with reference to FIG.

In the mating structure of the first embodiment, the rubber liner 3 as a filler has two taper surfaces 32 (bottom surface).
Two protrusions 33 are provided. The two protrusions 33 extend substantially parallel to the longitudinal direction of the rubber liner 3 along the tapered surface 32 and are in contact with the inclined guide surface 48 of the holding portion 42 of the frame member. That is, the tapered surface 32 on the rubber liner side
Does not come into close contact with the inclined guide surface 48 on the frame member side, but does not impair the predetermined sealing property and the two protrusions 3
It partially abuts the inclined guide surface 48 of the frame member sandwiching portion via the groove 3.

The outer peripheral surface 34 of the rubber liner 3 is in contact with the contact stopper 49 of the frame material holding portion. With the rubber liner upper surface 36 in contact with the frame member stop 49, the rubber liner inner peripheral surface 35 is located inward of the inner peripheral surface 43 defining the inclined guide surface of the frame material. That is, the width of the rubber liner 3 shown by reference numeral L1 in FIG.
Greater than the length L from 9 to the inner surface 43 (L <L1)
is doing. By doing so, a recess that becomes a dead space is not formed between the rubber liner 3 and the frame member 4, so that foreign matter such as rainwater and dust does not accumulate here, and the back surface side of the solar cell module 2 is prevented. A clean joint environment is maintained at. Further, the presser 45 of the frame member 4 is slightly tapered so that the step with the upper surface of the solar cell module 2 is reduced to make it difficult for foreign matter such as rainwater and dust to collect therein.

The rubber liner 3 has an outer peripheral surface 34
A portion 37 corresponding to a corner angle where the upper surface 36 and the upper surface 36 intersect is cut out. The notch 37 is formed on the outer peripheral surface 34 of the rubber liner.
Since it is intended to make it easier to contact the contact stopper 49 of the frame member sandwiching portion, it is desirable to keep the size to the minimum necessary and not to make it too large.

Further, the upper surface 36 of the rubber liner is in contact with the pressing member 45 of the frame member holding portion. In the inner part of the upper half of the rubber liner 3, 1/2 to 3/5 of the rubber liner width L1 is cut off to form an L-shaped cutout 39. The outer peripheral edge portion of the solar cell module 2 is fitted into the L-shaped notch portion 39, and is inserted into the holding portion 42 of the frame member 4 together with the rubber liner 3. Reference numeral 22 in the drawing is a silicon sealant provided on the back surface side of the solar cell module 2.

The size of each part of the rubber liner 3 used in this embodiment is shown below.

Rubber liner width L1; 12.5 mm L-shaped notch 39 length; 1384 mm L-shaped notch 39 height; 6.5 mm Outer peripheral surface 34 height; 9.9 mm Inner peripheral surface 35 height 3.85 mm Length of upper surface 36; 4.5 mm Height of protrusion 33; 1.5 mm Inclination angle of tapered surface 32; 10 ° ± 1 ° Frame member 4 holds module outer peripheral edge portion and rubber liner 3 In addition to the holding portion 42, the box channel 40 and the inner fin 46a are further provided. The box channel 40 is continuously provided below the sandwiching portion 42 and corresponds to a main portion responsible for the rigidity of the frame member 4. Inside this box channel 40, a pair of upper and lower screw holes 44
Are formed. As shown in FIG. 3, by screwing a screw 50 into the screw hole 44, the long-side frame member 4a and the short-side frame member 4b, which are components of the frame member 4, are fastened.

The inner fin 46a is a box channel 40.
Has a bolt hole 47 extending inward from the lower part of the. The bolt 51 is inserted into the bolt hole 47 from the fixed frame 55 side, and the frame member 4 is fastened to the fixed frame 55 by tightening the nut 52 on the inner fin 46a side. Reference numeral 53 in the figure is a washer.

The size of each part of the frame member 4 used in this embodiment is shown below.

Length of long side frame member 4a; 1412 ± 2 mm Length of short side frame member 4b; 1112 ± 2 mm Size of box channel 40; 12 mm × 35 mm Frontage of holding part 42; 9.5 × 9.5 mm Depth of the clamping portion 42; 1400 mm Height of the stopper 49; 9.9 mm Height of the box channel inner peripheral surface 43; 22 mm Length of the presser 45; 12 mm Overhang length of the inner fin 46a; 26 mm of the inclined guide surface 48 Inclination angle θ1; 10 ° ± 1 ° For the rubber liner 3, various synthetic rubbers such as neoprene rubber and butyl rubber are used. In this embodiment, neoprene rubber having a Shore hardness of 50 is used as the rubber liner 3. Also,
Aluminum or aluminum alloy was used for the frame member 4.

According to this embodiment, since the mutual contact area between the inclined guide surface 48 of the frame member and the tapered surface 32 is reduced by the protrusion 33 of the rubber liner, the rubber liner 3 is inserted into the holding portion 42 of the frame member. The friction resistance when
It becomes easy to push the rubber liner 3 in. Note that the required sealability is ensured by using a plurality of protrusions 33.

Further, according to the present embodiment, since the corner notch 37 is provided at the portion corresponding to the corner where the outer peripheral surface 34 and the upper surface 36 of the rubber liner intersect, the rubber liner 3
Is easily pushed to the place of the frame member 49, and the mutual adhesion between rubber and metal is improved, resulting in excellent durability.

Further, according to this embodiment, the inclination angle of the tapered surface 32 of the rubber liner is set to the inclination guide surface 48 of the frame member.
Since the inclination angle is smaller than the inclination angle, the rubber liner can be more easily pushed into the contact stop 49 of the frame member.

(Second Embodiment) Next, a joint structure of the second embodiment will be described with reference to FIG. It should be noted that description of the portions of the present embodiment that overlap the above-described embodiments will be omitted.

In the mating structure of the second embodiment, the two corner portions of the rubber liner 3A as a filler are notched to form a corner notch 37. Also, the frame material 4A
Has an outer fin 46b.

The size of each part of the rubber liner 3A used in this embodiment is shown below.

Rubber liner width L2; 12.5 mm Length of L-shaped notch 39; 1384 mm Height of L-shaped notch 39; 6.5 mm Height of outer peripheral surface 34: 9.9 mm Height of inner peripheral surface 35: 3.85 mm Length of upper surface 36; 4.5 mm Inclination angle of tapered surface 32; 10 ° ± 1 ° The size of each part of the frame member 4A used in this embodiment is shown below.

Length of long side frame member 4a; 1412 ± 2 mm Length of short side frame member 4b; 1112 ± 2 mm Size of box channel 40; 12 mm × 35 mm Frontage of holding part 42; 9.5 × 9.5 mm Depth of the clamping portion 42; 1400 mm Height of the stopper 49; 9.9 mm Height of the box channel inner peripheral surface 43; 22 mm Length of the presser 45; 12 mm Overhang length of the outer fin 46b; 26 mm Inclination guide surface 48 Inclination angle θ2; 10 ° ± 1 ° According to the present embodiment, in addition to the portion corresponding to the corner angle at which the outer peripheral surface 34 and the upper surface 36 of the rubber liner intersect, the corner at which the outer peripheral surface 34 and the tapered surface 32 further intersect. Since the corner cutouts 37 are also provided in the corner portions, it becomes easier to push the rubber liner 3A to the contact stopper 49 of the frame member and the mutual adhesion between the rubber liner and the frame member is further improved. It

Next, the case where the frame member and the rubber liner are attached to the outer peripheral edge of the solar cell module will be described with reference to FIGS. 6 and 7.

A rubber liner 3a having a sectional shape shown in FIG.
3b is cut into lengths corresponding to the long side and the short side of the solar cell module 2, respectively, and both ends of the cut pieces are cut at an angle of 45 ° to form a mating surface 31. Appropriate amounts of adhesive are applied to the mating surface 31 and the inner L-shaped surface 39, respectively, and as shown in FIG. 6, one pair of rubber liners 3a are respectively bonded to the long side end surfaces of the solar cell module 2 and the other pair is bonded. The rubber liners 3b are attached to the short-side end faces of the solar cell module 2, respectively. The rubber liners 3a, 3
The b's are bonded together at the mating surface 31. Module 2/3 with rubber liner until the adhesive is completely cured
To cure.

After the adhesive is completely cured, as shown in FIG. 7, one pair of frame members 4a are attached to the long sides of the module 2/3 with rubber liner, and the other pair of frame members 4b is attached to the rubber liner. Attached to the short sides of the attached module 2/3 respectively.

The frame members 4a and 4b are attached by hitting them with a hammer or the like until the outer peripheral surface 34 of the rubber liner abuts against the stopper 49 of the frame member.
Push it into a, 3b. Frame materials 4a and 4b and rubber liner 3
When the fitting with a and 3b is completed, the short side frame member 4a is fastened to the long side frame member 4b with screws 50 at each corner as shown in FIG. As a result, a solar cell panel whose periphery is protected by a frame material is completed.

The frame members 4a and 4b are attached to the rubber liner 3
Prior to fitting into the a and 3b, the long side frame member 4a is preliminarily attached to one end of the short side frame member 4b by 5042 to form L-shaped assembly frame members 4a and 4b, which are module 2/3 with a rubber liner. L-shaped assembly frame members 4a, 4 after being fitted into
You may make it fasten each other with the screw 50.

In the above embodiment, the case where the frame member having the inner fin or the outer fin is used has been described, but a frame member of no fin type may be used for the connecting structure of the present invention.

[0045]

According to the present invention, the lower surface of the sandwiching portion of the frame member is inclined to form an inclined guide surface, the frontage of the sandwiching portion is widened, and the lower surface of the filling material is inclined correspondingly to form a tapered surface. Therefore, it becomes easy to push the filling material to the place where the frame material is stopped. In this case, if the inclination angle of the taper surface of the filling material is smaller than the inclination angle of the inclination guide surface of the frame material, it becomes easier to push the filling material to the place where the frame material is abutted.

Further, according to the present invention, since the corner notch is provided in the portion corresponding to the corner where the outer peripheral surface and the upper surface of the filling material intersect, it becomes easy to push the filling material to the place where the frame material is applied. The mutual adhesion between the filler and the frame material is improved, and the durability is improved.

Further, according to the present invention, by providing the projection on the tapered surface of the filling material, the mutual contact area between the inclined guide surface of the frame material and the tapered surface is reduced, and the filling material is sandwiched by the frame material. Since the frictional resistance when inserting into
It becomes easier to push the filler.

[Brief description of drawings]

FIG. 1 is a plan view showing a solar cell panel in which a frame member is attached to a solar cell module.

FIG. 2 is a plan view showing the back surface side of the solar cell panel.

FIG. 3 is a partially enlarged view showing a corner portion of a frame material.

FIG. 4 is a cross-sectional view showing a mounting structure of the solar cell module frame according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a joint structure of a solar cell module frame according to a second embodiment of the present invention.

FIG. 6 is an exploded plan view showing a solar cell module and a filler for explaining the assembly of the solar cell panel.

FIG. 7 is an exploded plan view showing a solar cell module, a filler, and a frame material for explaining the assembly of the solar cell panel.

[Explanation of symbols]

1 ... Solar panel, 2 ... Solar cell module, 3, 3A ... Rubber liner (filler), 3a ... Long side rubber member, 3b ... short side rubber member, 31 ... Mating surface (adhesive surface), 32 ... tapered surface, 33 ... protrusion, 34 ... outer peripheral surface, 35 ... Inner surface, 36 ... top, 37, 38 ... Corner cutout, 39 ... L-shaped notch, 4, 4A ... Aluminum frame (frame material), 4a ... Long-side frame member, 4b ... Short side frame member, 40 ... Box channel (fastening part), 41 ... Notch fitting part, 42 ... clamping part, 43 ... an inner peripheral surface defining an inclined guide surface, 44 ... screw hole (fastening part), 45 ... Hold down, 46a ... Inner fin (fastening part), 46b ... outer fin (fastening part), 47 ... bolt holes, 48 ... inclined guide surface, 49 ... Stop (inner surface), 50 ... screw, 51 ... bolt, 52 ... nuts, 53 ... washers, 55 ... Fixed frame.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Minoru Koga             1-1 Satinoura Town, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries             Nagasaki Shipyard Co., Ltd. (72) Inventor Kazuhiko Ogawa             1-1 Satinoura Town, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries             Nagasaki Shipyard Co., Ltd. F-term (reference) 5F051 BA03 JA02 JA09

Claims (5)

[Claims] 1. A structure for mounting a solar cell module frame, wherein a rubber-based filler is inserted between an outer peripheral edge portion of the solar cell module and a frame member surrounding the solar cell module, wherein the frame member is the filler and the sun. A sandwiching portion that sandwiches the outer peripheral edge portion of the battery module together, and a fastening portion that is fastened to another member, wherein the sandwiching portion includes a retainer that abuts an upper surface of the outer peripheral edge portion of the solar cell module, and the filling In order to guide the filling material so that the filling material is easily inserted until the outer circumferential surface of the material comes into contact with the abutting stop, the gap between the holding material and An inclined guide surface that is inclined so that the inner side is wider than the outer side; and the filler is an upper surface that abuts the pressing member, an outer peripheral surface that abuts the abutting stopper, and an abutting guide surface that contacts the inclined guide surface. Touch A solar cell module frame mounting structure, comprising: a tapered surface; and an L-shaped cutout portion that abuts an end surface and a lower surface of an outer peripheral edge portion of the solar cell module. 2. The mounting structure for a solar cell module frame according to claim 1, wherein the filler has a plurality of protrusions on the tapered surface. 3. The solar cell module frame mounting structure according to claim 1, wherein the filler has a notch at a portion corresponding to a corner angle where the outer peripheral surface and the upper surface intersect. 4. The solar cell module frame mounting structure according to claim 1, wherein the taper surface of the filler has an inclination angle smaller than the inclination guide surface of the frame member. 5. The solar cell module frame assembly according to claim 1, wherein an inner peripheral surface of the filling material is located inward of an inner peripheral surface defining an inclined guide surface of the frame material. Construction.